Last Updated: September 24, 2026
Bed sores, also called pressure injuries or pressure ulcers, develop when constant pressure cuts off blood flow to skin and underlying tissue. In a bedridden senior, damage can start in just a few hours, often over bony areas such as the tailbone, hips, heels, and shoulder blades. Once a deep sore forms, it can take months to heal and can lead to serious infection. The good news is that most pressure injuries are preventable with consistent care. This guide explains the key prevention steps for caregivers; work with the person’s doctor or nurse for an individual care plan.
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Know the High-Risk Areas
| Position | High-risk areas |
|---|---|
| Lying on back | Tailbone (sacrum), heels, shoulder blades, back of head, elbows |
| Lying on side | Hip bone, outer knee, ankle, shoulder, ear |
| Sitting in chair or bed | Sitting bones, tailbone, heels, spine |
Reposition Regularly
How often
A common guideline is to change position at least every two hours in bed, but the right frequency depends on the person’s skin, mattress, and health. Some people need more frequent turns. People sitting in a chair who cannot shift themselves may need repositioning every hour.
Use a 30-degree tilt
When turning to the side, tilt about 30 degrees with pillows behind the back, rather than lying fully on the hip bone. This spreads pressure.
Keep the head of the bed low
Raising the head of the bed above 30 degrees makes the body slide down, causing friction and shear on the tailbone. Keep it as low as medically appropriate, except during meals and for 30 minutes afterward.
Lift, don’t drag
Use a draw sheet or slide sheet to reposition, with two people if needed, to avoid friction.
Use Pressure-Relieving Surfaces
Mattresses
High-specification foam mattresses redistribute pressure better than standard ones. Alternating pressure air mattresses, which inflate and deflate cells, or low-air-loss mattresses are often used for higher-risk patients. Medicare may cover support surfaces when medically necessary.
Heel protection
Heels are very vulnerable. Place a pillow under the calves so heels float off the mattress, or use heel protection boots.
Cushions for sitting
Use a pressure-relieving cushion in chairs and wheelchairs. Avoid donut-shaped cushions, which can reduce blood flow.
Care for the Skin
Inspect the skin at least once a day, especially over bony areas. Look for redness that does not fade after 30 minutes of pressure relief, warmth, swelling, or blisters. On darker skin, look for purple or bluish discoloration and feel for warmth or firmness.
Keep skin clean and dry. Clean promptly after incontinence with a gentle, pH-balanced cleanser, and use a barrier cream. Moisturize dry skin but avoid massaging bony areas vigorously, since that can damage fragile tissue.
Support Nutrition and Hydration
Skin needs protein, calories, vitamins, and fluids to stay healthy and heal. Encourage balanced meals and fluids unless restricted. A dietitian can recommend supplements if the person is underweight or eating poorly.
Manage Moisture and Incontinence
Prolonged moisture weakens skin. Use breathable incontinence products, change them promptly, and avoid layering multiple pads, which trap heat and moisture.
Encourage Movement
Even small movements help. If the person can shift weight, remind them regularly. Gentle range-of-motion exercises, guided by a therapist, improve circulation.
When to Contact a Doctor or Nurse
Seek medical advice promptly if you see persistent redness, blisters, open skin, or signs of infection such as foul odor, pus, increasing pain, or fever. Early treatment prevents progression.
A Sample Turning Schedule
Writing the schedule down keeps care consistent across family members and aides. A simple two-hour rotation might run: back (head of bed at or below 30 degrees) at 8 a.m., left 30-degree tilt at 10, back at noon for lunch with the head raised, right tilt at 2 p.m., and so on through the night. Post the chart near the bed with a column to initial each turn and note any red areas. If a spot stays red at the next check, skip that side until it fades and tell the nurse.
FAQ
How fast can a bed sore develop?
In vulnerable people, skin damage can begin within two to six hours of unrelieved pressure. That is why regular repositioning is essential.
Does Medicare cover pressure-relieving mattresses?
Medicare Part B may cover certain support surfaces when a doctor documents medical need, such as existing pressure injuries or high risk. Coverage depends on the type of surface and criteria.
Bottom Line
Preventing bed sores in bedridden seniors depends on regular repositioning, pressure-relieving mattresses and heel protection, daily skin checks, moisture control, and good nutrition. Consistent routines matter more than any single product, so build a turning schedule and involve the care team early.
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